Form turning tool mechanism



Feb. 17, 1948. w. HAYNES FORM TURNING TOOL MECHANISM Filed Oct. 27, 1944 2 Sheets-Sheet 1 Feb. 17, 1948.

L. W. HAYNES FORM TURNING TOOL MECHANISM 2 Sheets-Sheet 2 v I |lLLl j.

Filed 001;. 27, 1944 W l l Patented Feb. 17, 1948 I 2,4e25s FORM rormme TOOL MECHANISM Leslie W. Haynes, Windsor, Vt., assignor to Cone Automatic Machine Company Inc., Windsor, Vt., a corporation of Vermont Application October 27, 1944, Serial No. 560,677

This invention relates to a tool mechanism adapted to be carried by a tool carriage restricted to in and out motion but by the use of which a turning tool carried thereby may be made to traverse the work in addition to the in and out motion of the tool slide.

'A further object of the invention is to provide such a mechanism wherein, if desired, the turn ing tool may cut tapers to an adjustable degree.

Still another object is to provide such a mechanism adapted to be carried by any of the front and rear tool carriages of a multiple spindle lathe, the traversing action being effected as by cams on an actuating shaft. or

For a complete understanding of this invention, reference may be had to the accompanying drawings in which Figure 1 is a fragmentary rear elevation of a multiple spindle lathe of the well known Cone type showing the mechanism of the invention applied to thetop back tool carriage.

Figure 2 is a sectional view on line 22 of Figure 1.

Figure 3 is a somewhat diagrammatic fragmentary top plan view of the mechanism and a work piece showing the tool having made an initial cut and before the start of traverse.

Figures 4 and 5 are views similar to Figure 3, but showing the tool at the completion of a straight traverse andin retracted position after such traverse, respectively.

Figure 6 is a view similar to Figure 4, but showing the mechanism set for taper turning.

Figure 7 is a view of the mechanism partly in top plan and partly broken away and in section and to a much larger-scale than Figures 3 to 6, inclusive.

Figure 8 is an end elevation of the mechanism similar to a portion of Figure 2, but to the scale of Figure 7. V

Figure 9 is a detail sectional view to a larger scale on line 99 of Figure 1;

Referring first to Figures 1 and 2, there is illustrated a multiple spindle lathe of the well known Cone type having a work spindle carrier l indexable about a central axis 2 and carrying rotary work spindles in parallelism with the axis 2 and arranged therearound in circular series as at 3..

In the machine shown, four such spindles are employed, but the number is not material to this invention, At the front and back of the machine, are mounted two slides, the upper slides being indicated at 5 and B in Figures 1 and 2, and there may be lower similar slides, these slides being movable from and toward work carried by the 3 Claims. (CI. 8217) spindles, two of these. slides being mounted to move backwardly from the forward face of the machine, and the other two being mounted to move forwardly from the back face of the machine to cause a tool carried thereby to operate on work. There may be lower slides I and 8 similarly mounted and movable toward and from the two lower work spindles in each indexed position of the spindle carrier. The subject matter of this invention may be applied to any of these tool carriages, but as shown it is applied to the upper back tool carriage so that the tool carried thereby may operate on Work held by the top rear spindle in each indexed position of the carrier. I

Machines of this type are provided with overhead actuating cam shafts, such a shaft being shown at l0, and to this shaft are fixed cam drums, certain of which are illustrated in Figure 1. This machine is substantially as shown in the Cone Patent No. 2,142,557, granted January 3, 1939, The front and back tool carriages or slides are arranged to be moved in toward the work pieces carried by the spindles or retracted therefrom by suitable cams carried by cam drums on the shaft l0, and as shown this is accomplished by the use of vertically arranged rock members such as it, each rock member having an arm to which a bar l6 may be secured, these bars being moved by suitable cams on certain of the cam drums as is disclosed in the Cone patent to which reference has been made. The rock members I l have other arms I! which are connected through links l8 and eyebolts l9 to the various tool carriages. Each of the tool carriages has a slotted portion for the reception of a tool or tool holding member.

In accordance with the present invention a block 22 may be inserted in the portion 20 of one of the slides such as the slide 6, and be fixed in position as by a strap 25 extending thereacross and secured to the slide 6 as by bolts 21. The block 22, as best shown in Figures 3 to 'I, has pivoted thereto, as on the pivot pin 30, a slideway member 3|, and in order to adjust the angular relation between this member 3| and block 22, this block 22 may have journaled therein a bolt 32 having its threaded extremity passing through a slot 33 in the slideway member 3| and threaded into a pin 34 journaled in the block 3|. The bolt 32 being threaded into the pivot 34 causes a transverse movement of this pivot 34 by the turning of the bolt, this, in turn, imparting a motion to the member 3| about its pivot 30. As shown best in Figure 7, the hole in the block 22 where the bolt 32 passes, is enlarged for the greater portion of its length from the bore necessary to pass the bolt so that the bolt may be free to flex as it is turned to provide for lateral displacement of the pivot 34, due to the fact that it moves about an are described about the axis of the pivot 30 as a center. As the amount of adjustment of this bolt is not large, this enlarged portion provides for= sufiicientifiexure iofjthez bolt to follow the pivot "34in its arcuate path. By

adjustment of this bolt 32, the forward face of. of a block fixed to said carriage, a slideway memthe member 3i may be adjusted angularly into or out of parallelism with theaxis-of vthe adjacent work spindle.

In Figures 3 and 4 the adjustment 'is'suh that the guideway of the member 3| is arranged-par allel to the work axis. Member 3| is provided with a guideway 40 in its forward face-(see: p rticularly Figure 8) within which is slidably guided a tool slide 4| retained by guide stripsWBWand 4! to which slide, by any suitable means, a turning tool 42 maybe secured. It will be evident that as the slide 4| is moved in its slldeway, the

tool carriedthereby' is caused to traverse :the

work, and'if the base of the guideway is exactly parallel to-the work axis, this motion of the slide willcause the tool to traverse the Workand form -a straight or non-tapering cut thereon. If, however, the slidewayis adjusted angularly, as shown, for example, in Figure 6,'so that theipath of "lng member'452 and housinga ball end Willi of a second connecting member 454. The other end of 1the'lever 46 carries a cam follower ro'll48 adapted to beswung by certain cams (not shown) se- 1 cured to one of the cam drums. Thus as'thecam shaft rotates, the cams cause rocking of "the -lever 46, :the corresponding pushing and pulling exerted through the joint 45 causing "the tool slide to betraversed along its slideway. Th parts are so timed that the tool carriage first moves inwardly to present the toolto the work, and p oducexa cut of the desired depth as shown at in Fi refi. While the tool carriage remains in this inward position, the lever 46 i then actuated to move the tool slide Malong the'slideway, gthus extending the cut 50 'as shown inFigure 4, ,or in case of a tapered cut-as shownln Figure fi. The tool slide may thenbe'retracted' as shown in Figure "5 bringing the tool out-from; the-work. whereupon the slide may be :returned 'to' its initi al position shown in dotted lines in Figure-5 ready forthe succeeding operations on "the next ber pivoted to said block, said member having a slideway. adjustable by the angular adjustment of said member about its pivot in a plane containing the axis bf=saidspind1e into or out of parallelism vith's'aidaxis, means for producing such angular adjustment of said member, a slide movable in ssaid slidewaya' tool carried by said slide, an actuating shaft, and driving means actuated by said shaft for moving said carriage and said slide in predetermined coordination to cause said tool :to traverse the work in the :direction determined by the imotion oii said slide. and the angular ad justment of said member.

2. In combinationiwith a lathe having a rotary rwork spindle, a, tool carriage m'ovable laterally toward and from work carried bysaid spindle, :and meansincluding acam shaft havin cams thereonlfor so moving said 'carriage, oi a block fixed to said carriageia slidewaymember. pivoted to said" block, said member 'havinga' sl-ideway ad- 'j'ustable by theangular adjustment of "said member about'itspivot in a plane containing the axis of said spindle into or out or para11eiism with said axis, means for producing such -angular -adjustpiece ofwork which .is presented in proper relam'ent of said member, a slide T movable in said slidew'ay, a'tool carriedby' said slide-" and means actuated from cams on said cam shaft a'n'd coordinated with the motion of'said'tool carriage for moving said slide to cause said tool to traverse "the-work in thedirectior'i determined by-the'motion of said slide andthe angular adg'uistme'nt of saidmember.

3. In combination with a lathe havinga'rotary work spindle, a tool carriage n'iov'able laterally toward and from work carried-bysaid spindle, and means'includingac'am shaft hav'ing cams thereon for so moving said carriage-of a bloc'k'fixed to said-carriage, a s'lideway-member pivoted to said block, said member having-a slideway adjustable-by the angular adjustment'of said memher about its pivot in-a plane-containingthe axis of said spindle into or out of parallelism with said axis, means=for producing such angular adjustment of said member, a slide movable in said slideway, a toolcarried by said slide, and means actuated from cams 'on-s'aid ca'm shaft-and coordinated with the motion of said tool carriage for-moving said slide to causesaidtom to' t'ra'verse the work in the direction determined ?by the motion of said slide andthe angular adjustment of said member, said samsh'aftactuated means ineludingauniversaljoint.

'LESLIE'W. REFERENCES CITED The following references "are of record in t file of this patent:

UNITED STATES PATENTS Number Name Date 567,549 Petereit Sept. 8, 1896 2,349,593 Kouba i May 23, 1944:

FOREIGN PATENTS Number I Country Date 6,783 Great Britain ..1903 

